UC知道最简单的题目
来源：百度知道 编辑：UC知道 时间：2024/06/18 03:20:32
Problem Description
Calculate A * B.
Input
Each line will contain two integers A and B. Process to end of file.
Note: the length of each integer will not exceed 50000.
Output
For each case, output A * B in one line.
Sample Input
1
2
1000
2
Sample Output
2
2000
我：
#include<stdio.h>
void main()
{
unsigned long a,b,c;
while(scanf("%lu%lu",&a,&b)!=EOF)
{
printf("%lu\n",c=a*b);
}
}
Calculate A * B.
Input
Each line will contain two integers A and B. Process to end of file.
Note: the length of each integer will not exceed 50000.
Output
For each case, output A * B in one line.
Sample Input
1
2
1000
2
Sample Output
2
2000
我：
#include<stdio.h>
void main()
{
unsigned long a,b,c;
while(scanf("%lu%lu",&a,&b)!=EOF)
{
printf("%lu\n",c=a*b);
}
}
Note: the length of each integer will not exceed 50000.
50000位已经远远超过long 型数字的范围，需要高精度乘法来做的。
高精度就是用数组来存放结果，通常每个数组元素存4位
printf("%lu\n",a*b);